Schurrle joined Borussia Dortmund earlier this season after a one-year spell at Wolfsburg.

Andre Schurrle was Jose Mourinho's first signing during the Portuguese manager’s second coming at Chelsea, the English club paying £18.75 million to sign the German winger. Despite making 43 appearances in the 2013/14 season, his appearances soon became a rarity.

"Mourinho showed me how hard life can be as a footballer. If you had one bad game, you would be out of the team,” the current Dortmund attacker told German newspaper Bild.

"Chelsea was a dream for me. But after I was out for a few weeks through an infection, the coach, unfortunately, did not count on me much more often.”

Schurrle returned to the Bundesliga after a lack of appearances under Mourinho and he joined Wolfsburg for £22 million.

“You have to make a decision, and in the end, I only wanted to play football again. Germany manager Joachim Löw told me it would be a great move for me and that is why Wolfsburg are a step forward for me. Wolfsburg have a great team as well and can play for silverware in the Bundesliga and in Europe,” said the 26-year-old winger upon his move. He has since joined Dortmund for an undisclosed fee.

The player, who has currently made 10 appearances for Dortmund and scored twice, holds no regrets over his time at the SW6. During his time at the club, Schurrle won a Premier League and League Cup medal, as he had made just about enough appearances in both the competitions before he let in January.

"My experience at Chelsea was great, playing with so many superstars – it was just like I had imagined it. Playing for Chelsea was an absolute dream for me, but following my infection, the manager no longer counted on me."

Mourinho was often criticised for his handling of players during his second term at Chelsea. He came under scrutiny for his man-management, and many believe that he was sacked from the job mainly because he had lost the dressing room. In his current spell as manager of Manchester United, there have been reports of certain unhappiness in the locker room, especially with his treatment of players like Bastian Schweinsteiger, Luke Shaw and Chris Smalling.

His team currently sits 6th in the table, and if transfer rumours are to believed, the club will continue undergoing massive changes in terms of personnel as Mourinho tries to find the perfect squad to work with.